A math student seeks a quiet place to study for his exams but winds up battling an angry ghost. Stoker certainly knew mathematical words to throw around (e.g. quaternions and conic sections), but this story is still only barely mathematical. The student seems smart, though not smart enough, and it may be a statement about mathematicians that he is both so interested in studying and so capable of losing himself in his studies. It is a good ghost story, but doesn't say much of anything about mathematics or mathematicians.